ive found this one, and it fits perfectly in my small-bar-UI but there is one Cosmetic-Bug (which is for me annoying)

I configurated the Bar sothat 2 Bars popup when my Mouse is over the Bars, okay this works perfectly, but in Combat when I cast something the Cooldown is visbile Over the hidden Buttons also I dont need Cooldown-Graphics on the Popbar.

Please can you put in an option for disabling this Cooldown-Graphic for hidden Buttons in Combat? I would be more happy

I definately had both dependencies installed in my Addons folder and both were enabled for all my characters, so if either wasn't loading then I'm not sure what was wrong! However, I gave up on ever finding a working version of PopBar and have now rebuilt my entire UI without it!

Grizzly, I had that same error. You may want to verify that both dependencies (MCom and Sea) are also loaded. If one is not loaded, PopBar will not work. It will show loaded, will give no error messages, yet will not function correctly.

The "type /popbar or /pb to show configuration window" doesn't work, in fact those two commands don't appear to do anything! I've got PopBar displayed (from a different, older version) but just can't do anything to actually configure it! When placing anything on the buttons, either macros or items, is pointless as well because when you click on them nothing happens.

Think it's fair to say that this just does not work in the current version of WoW.